20 College of Forestry 
that time: P. rufipennis, Eccoptogaster piceae, P. dislo- 
catus, a small moth Hpicallima argenticinctella Clem., several 
undetermined psochids, and several parasitic hymenoptera — 
Cheiropachus sp., Heterospilus sp., Spathius tomict, and also 
another hymenoptera Prosopis sp. 
On September 28 this material was moved into the labora- 
tory, the contents of one cage being placed in tight storage 
boxes while that of the other was left in cages indoors. Dur- 
ing January, February and March of 1917, this material 
both in the breeding cages and storage boxes again became: 
active and gave rise to a large number of species not previ- 
ously taken from it. These are the two-year forms and their 
parasites and comprise the following insects: the ceram- 
Byers af 99 hea coe Hag sale sex-quitatus, 
hrysobothris blanch- 
na. Ce seu- en C. Fetipes Melanophila fulvoguttata, 
and Anthaxia quercata; the hymenopterous parasites — 
Phasgonophora sp., Odontaulacus bilobatus and Atoreutus 
astigmus; and the small fly — Pollena rudis. 
Tree No. II was a larch of about 8 inches D. B. H. im 
the west group of trees of this species. It had been killed 
by having the bark removed from near the base in 1914. No 
insects were taken from this tree in the field, but a segment 
about 20 feet from the base was seen to be infested and this 
was placed in a breeding cage to breed out the inhabitants. 
The insects derived from this material are P. rufipennis,. 
Phyllobaenus dislocatus, the supposedly parasitic fly Mede- 
terus sp. and the siricid Urocerus albicornis represented by 
a female and a male. Samples of this one region of this 
tree were the only ones brought from the field. 
Tree No. III was killed by the bark having been peeled 
off of it — probably in 1914. Above the peeled portions the 
bark was well riddles by the engravings of P. rufipennis and 
also contained the larvae and burrows of several cer ambycids, 
of species unknown at the time the material was examined 
in the field. A sample of the trunk of this tree about six 
inches in diameter taken from about five feet above ground 
